AT 2145C, A 3/4 JOINT PATROL WAS FIRED ON BY A POB UNIT, IN WESTERN FALLUJAH. THE PATROL SHOUTED TO THE POB UNIT TO CEASE- FIRE BUT THE POB UNIT FIRED ANOTHER SHOT. THE JOINT PATROL APPROACHED THE POB UNIT WITH THEIR INTERPRETER. IT WAS DETERMINED THAT THE POB SOLDIER WHO FIRED AT THE JOINT PATROL WAS E`NAD ADIL ALI, BAT - POB # G201151. THE POB CLAIMED TO MISTAKE THE MARINES` JOINT PATROL FOR INSURGENTS. THE POB UNIT WAS INSTRUCTED NOT TO FIRE ON MARINES/ISF. NO INJ/DAMAGE.